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package com.taobao.weex.ui.component;

import android.content.Context;
import android.text.Editable;
import android.text.InputFilter;
import android.text.InputType;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.text.method.PasswordTransformationMethod;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.TextView;

import com.taobao.weex.WXSDKInstance;
import com.taobao.weex.WXSDKManager;
import com.taobao.weex.common.WXDomPropConstant;
import com.taobao.weex.dom.WXDomObject;
import com.taobao.weex.dom.WXStyle;
import com.taobao.weex.dom.WXTextDomObject;
import com.taobao.weex.ui.view.WXEditText;
import com.taobao.weex.utils.WXResourceUtils;
import com.taobao.weex.utils.WXUtils;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by sospartan on 7/11/16.
 */
public abstract class AbstractEditComponent extends WXComponent<WXEditText> {

  private final InputMethodManager mInputMethodManager = (InputMethodManager) mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
  private String mBeforeText = "";
  private boolean mAutoFocus;
  private String mType = "text";

  public AbstractEditComponent(WXSDKInstance instance, WXDomObject dom, WXVContainer parent, boolean isLazy) {
    super(instance, dom, parent, isLazy);
  }

  @Override
  protected WXEditText initComponentHostView(Context context) {
    WXEditText inputView = new WXEditText(context);
    appleStyleAfterCreated(inputView);
    return inputView;
  }

  /**
   * Process view after created.
   *
   * @param editText
   */
  protected void appleStyleAfterCreated(WXEditText editText) {
    String alignStr = (String) mDomObj.style.get(WXDomPropConstant.WX_TEXTALIGN);
    int textAlign = getTextAlign(alignStr);
    if (textAlign <= 0) {
      textAlign = Gravity.LEFT;
    }
    editText.setGravity(textAlign | Gravity.CENTER_VERTICAL);
    int colorInt = WXResourceUtils.getColor("#999999");
    if (colorInt != Integer.MIN_VALUE) {
      editText.setHintTextColor(colorInt);
    }

    editText.setTextSize(TypedValue.COMPLEX_UNIT_PX, WXStyle.getFontSize(mDomObj.style));
    editText.setText((String) mDomObj.attr.get("value"));
  }


  @Override
  public void addEvent(String type) {
    super.addEvent(type);
    if (mHost == null || TextUtils.isEmpty(type)) {
      return;
    }
    final TextView text = (WXEditText) mHost;

    if (type.equals(WXEventType.INPUT_CHANGE)) {
      text.setOnFocusChangeListener(new View.OnFocusChangeListener() {
        CharSequence mLastValue = text.getText();

        @Override
        public void onFocusChange(View v, boolean hasFocus) {
          CharSequence newValue = text.getText();
          newValue = newValue == null ? "" : newValue;
          if (!hasFocus && !newValue.equals(mLastValue)) {
            mLastValue = newValue;

            String event = mDomObj.event.contains(WXEventType.INPUT_CHANGE) ? WXEventType.INPUT_CHANGE : null;
            fireEvent(event, newValue.toString());
          }
        }
      });
    } else if (type.equals(WXEventType.INPUT)) {
      text.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
          if (mBeforeText.equals(s.toString())) {
            return;
          }

          String event = mDomObj.event.contains(WXEventType.INPUT) ? WXEventType.INPUT : null;
          fireEvent(event, s.toString());

          mBeforeText = s.toString();
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
      });
    }
  }

  private void fireEvent(String event, String value) {
    if (event != null) {
      Map<String, Object> params = new HashMap<>(2);
      params.put("value", value);
      params.put("timeStamp", System.currentTimeMillis());

      Map<String, Object> domChanges = new HashMap<>();
      Map<String, Object> attrsChanges = new HashMap<>();
      attrsChanges.put("value", value);
      domChanges.put("attrs", attrsChanges);

      WXSDKManager.getInstance().fireEvent(mInstanceId, mDomObj.ref, event, params, domChanges);
    }
  }

  @Override
  protected boolean setProperty(String key, Object param) {
    switch (key) {
      case WXDomPropConstant.WX_ATTR_INPUT_PLACEHOLDER:
        String placeholder = WXUtils.getString(param,null);
        if (placeholder != null)
          setPlaceholder(placeholder);
        return true;
      case WXDomPropConstant.WX_INPUT_PLACEHOLDER_COLOR:
        String placeholder_color = WXUtils.getString(param,null);
        if (placeholder_color != null)
          setPlaceholderColor(placeholder_color);
        return true;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE:
        String input_type = WXUtils.getString(param,null);
        if (input_type != null)
          setType(input_type);
        return true;
      case WXDomPropConstant.WX_ATTR_INPUT_AUTOFOCUS:
        Boolean result = WXUtils.getBoolean(param, null);
        if (result != null)
          setAutofocus(result);
        return true;
      case WXDomPropConstant.WX_COLOR:
        String color = WXUtils.getString(param,null);
        if (color != null)
          setColor(color);
        return true;
      case WXDomPropConstant.WX_FONTSIZE:
        String fontsize = WXUtils.getString(param,null);
        if (fontsize != null)
          setFontSize(fontsize);
        return true;
      case WXDomPropConstant.WX_TEXTALIGN:
        String text_align = WXUtils.getString(param,null);
        if (text_align != null)
          setTextAlign(text_align);
        return true;
      case WXDomPropConstant.WX_ATTR_INPUT_SINGLELINE:
        Boolean singLineResult = WXUtils.getBoolean(param, null);
        if (singLineResult != null)
          setSingleLine(singLineResult);
        return true;
      case WXDomPropConstant.WX_ATTR_INPUT_LINES:
        Integer lines = WXUtils.getInteger(param, null);
        if (lines != null)
          setLines(lines);
        return true;
      case WXDomPropConstant.WX_ATTR_INPUT_MAXLENGTH:
        Integer maxlength = WXUtils.getInteger(param, null);
        if (maxlength != null)
          setMaxLength(maxlength);
        return true;
    }
    return super.setProperty(key, param);
  }

  @WXComponentProp(name = WXDomPropConstant.WX_ATTR_INPUT_PLACEHOLDER)
  public void setPlaceholder(String placeholder) {
    if (placeholder == null || mHost == null) {
      return;
    }
    ((WXEditText) mHost).setHint(placeholder);
  }

  @WXComponentProp(name = WXDomPropConstant.WX_INPUT_PLACEHOLDER_COLOR)
  public void setPlaceholderColor(String color) {
    if (mHost != null && !TextUtils.isEmpty(color)) {
      int colorInt = WXResourceUtils.getColor(color);
      if (colorInt != Integer.MIN_VALUE) {
        ((WXEditText) mHost).setHintTextColor(colorInt);
      }
    }
  }

  @WXComponentProp(name = WXDomPropConstant.WX_ATTR_INPUT_TYPE)
  public void setType(String type) {
    if (type == null || mHost == null) {
      return;
    }
    mType = type;
    ((EditText) mHost).setRawInputType(getInputType(mType));
  }

  @WXComponentProp(name = WXDomPropConstant.WX_ATTR_INPUT_AUTOFOCUS)
  public void setAutofocus(boolean autofocus) {
    if (mHost == null) {
      return;
    }
    mAutoFocus = autofocus;
    EditText inputView = (EditText) mHost;
    if (mAutoFocus) {
      inputView.setFocusable(true);
      inputView.requestFocus();
      inputView.setFocusableInTouchMode(true);
      inputView.postDelayed(new Runnable() {
        @Override
        public void run() {
          showSoftKeyboard();
        }
      }, 16);
    } else {
      inputView.postDelayed(new Runnable() {
        @Override
        public void run() {
          hideSoftKeyboard();
        }
      }, 16);
    }
  }

  @WXComponentProp(name = WXDomPropConstant.WX_COLOR)
  public void setColor(String color) {
    if (mHost != null && !TextUtils.isEmpty(color)) {
      int colorInt = WXResourceUtils.getColor(color);
      if (colorInt != Integer.MIN_VALUE) {
        ((WXEditText) mHost).setTextColor(colorInt);
      }
    }
  }

  @WXComponentProp(name = WXDomPropConstant.WX_FONTSIZE)
  public void setFontSize(String fontSize) {
    if (mHost != null && fontSize != null && mDomObj.style != null) {
      ((WXEditText) mHost).setTextSize(TypedValue.COMPLEX_UNIT_PX, WXStyle.getFontSize(mDomObj.style));
    }
  }

  @WXComponentProp(name = WXDomPropConstant.WX_TEXTALIGN)
  public void setTextAlign(String textAlign) {
    int align = getTextAlign(textAlign);
    if (align > 0) {
      ((EditText) mHost).setGravity(align | Gravity.CENTER_VERTICAL);
    }
  }

  @WXComponentProp(name = WXDomPropConstant.WX_ATTR_INPUT_SINGLELINE)
  public void setSingleLine(boolean singleLine) {
    if (mHost == null) {
      return;
    }
    ((WXEditText) mHost).setSingleLine(singleLine);
  }

  @WXComponentProp(name = WXDomPropConstant.WX_ATTR_INPUT_LINES)
  public void setLines(int lines) {
    if (getHostView() == null) {
      return;
    }
    getHostView().setLines(lines);
  }

  @WXComponentProp(name = WXDomPropConstant.WX_ATTR_INPUT_MAXLENGTH)
  public void setMaxLength(int maxLength) {
    if (getHostView() == null) {
      return;
    }
    getHostView().setFilters(new InputFilter[]{new InputFilter.LengthFilter(maxLength)});
  }

  @Override
  public WXTextDomObject getDomObject() {
    return (WXTextDomObject) super.getDomObject();
  }

  private int getInputType(String type) {
    int inputType;
    switch (type) {
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_TEXT:
        inputType = InputType.TYPE_CLASS_TEXT;
        break;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_DATE:
        inputType = InputType.TYPE_CLASS_DATETIME | InputType.TYPE_DATETIME_VARIATION_DATE;
        break;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_DATETIME:
        inputType = InputType.TYPE_CLASS_DATETIME;
        break;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_EMAIL:
        inputType = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS;
        break;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_PASSWORD:
        inputType = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD;
        getHostView().setTransformationMethod(PasswordTransformationMethod.getInstance());
        break;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_TEL:
        inputType = InputType.TYPE_CLASS_PHONE;
        break;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_TIME:
        inputType = InputType.TYPE_CLASS_DATETIME | InputType.TYPE_DATETIME_VARIATION_TIME;
        break;
      case WXDomPropConstant.WX_ATTR_INPUT_TYPE_URL:
        inputType = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_URI;
        break;
      default:
        inputType = InputType.TYPE_CLASS_TEXT;
    }
    return inputType;
  }

  private boolean showSoftKeyboard() {
    if (mHost == null) {
      return false;
    }
    return mInputMethodManager.showSoftInput(mHost, InputMethodManager.SHOW_IMPLICIT);
  }

  private void hideSoftKeyboard() {
    if (mHost != null) {
      mInputMethodManager.hideSoftInputFromWindow(mHost.getWindowToken(), 0);
    }
  }

  private int getTextAlign(String textAlign) {
    int align = Gravity.LEFT;
    if (TextUtils.isEmpty(textAlign)) {
      return align;
    }
    if (textAlign.equals(WXDomPropConstant.WX_TEXTALIGN_LEFT)) {
      align = Gravity.LEFT;
    } else if (textAlign.equals(WXDomPropConstant.WX_TEXTALIGN_CENTER)) {
      align = Gravity.CENTER;
    } else if (textAlign.equals(WXDomPropConstant.WX_TEXTALIGN_RIGHT)) {
      align = Gravity.RIGHT;
    }
    return align;
  }

}